diff options
Diffstat (limited to 'drivers/media/tuners')
| -rw-r--r-- | drivers/media/tuners/mt2060.c | 25 | ||||
| -rw-r--r-- | drivers/media/tuners/mt2060_priv.h | 8 |
2 files changed, 31 insertions, 2 deletions
diff --git a/drivers/media/tuners/mt2060.c b/drivers/media/tuners/mt2060.c index 14f5935f8898..2e487f9a2cc3 100644 --- a/drivers/media/tuners/mt2060.c +++ b/drivers/media/tuners/mt2060.c @@ -313,9 +313,16 @@ static int mt2060_init(struct dvb_frontend *fe) if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */ + if (priv->sleep) { + ret = mt2060_writereg(priv, REG_MISC_CTRL, 0x20); + if (ret) + goto err_i2c_gate_ctrl; + } + ret = mt2060_writereg(priv, REG_VGAG, (priv->cfg->clock_out << 6) | 0x33); +err_i2c_gate_ctrl: if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */ @@ -332,7 +339,13 @@ static int mt2060_sleep(struct dvb_frontend *fe) ret = mt2060_writereg(priv, REG_VGAG, (priv->cfg->clock_out << 6) | 0x30); + if (ret) + goto err_i2c_gate_ctrl; + + if (priv->sleep) + ret = mt2060_writereg(priv, REG_MISC_CTRL, 0xe8); +err_i2c_gate_ctrl: if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */ @@ -435,6 +448,7 @@ static int mt2060_probe(struct i2c_client *client, dev->if1_freq = pdata->if1 ? pdata->if1 : 1220; dev->client = client; dev->i2c_max_regs = pdata->i2c_write_max ? pdata->i2c_write_max - 1 : ~0; + dev->sleep = true; ret = mt2060_readreg(dev, REG_PART_REV, &chip_id); if (ret) { @@ -449,14 +463,21 @@ static int mt2060_probe(struct i2c_client *client, goto err; } + /* Power on, calibrate, sleep */ + ret = mt2060_writereg(dev, REG_MISC_CTRL, 0x20); + if (ret) + goto err; + mt2060_calibrate(dev); + ret = mt2060_writereg(dev, REG_MISC_CTRL, 0xe8); + if (ret) + goto err; + dev_info(&client->dev, "Microtune MT2060 successfully identified\n"); memcpy(&fe->ops.tuner_ops, &mt2060_tuner_ops, sizeof(fe->ops.tuner_ops)); fe->ops.tuner_ops.release = NULL; fe->tuner_priv = dev; i2c_set_clientdata(client, dev); - mt2060_calibrate(dev); - return 0; err: dev_dbg(&client->dev, "failed=%d\n", ret); diff --git a/drivers/media/tuners/mt2060_priv.h b/drivers/media/tuners/mt2060_priv.h index cc738aa82fe4..a6c931c1a5a7 100644 --- a/drivers/media/tuners/mt2060_priv.h +++ b/drivers/media/tuners/mt2060_priv.h @@ -98,6 +98,14 @@ struct mt2060_priv { u32 frequency; u16 if1_freq; u8 fmfreq; + + /* + * Use REG_MISC_CTRL register for sleep. That drops sleep power usage + * about 0.9W (huge!). Register bit meanings are unknown, so let it be + * disabled by default to avoid possible regression. Convert driver to + * i2c model in order to enable it. + */ + bool sleep; }; #endif |